This small adenomatous polyp (tubular adenoma) on a small stalk is seen microscopically to have more crowded, disorganized glands than the normal underlying colonic mucosa.

• 小腺瘤息肉（管状腺瘤）带有小蒂，镜下可见它比正常的结肠黏膜有更多的拥挤的无组织的腺体。